DC Inverter U-match Series Floor Ceiling Type Unit

Air Conditioners

Installation Manual

DC Inverter U-match Series Floor Ceiling Type Unit

Thank you for choosing these Air Conditioners, please read this owner’s manual carefully before operation and retain it for future reference.

Models:

Indoor Unit Outdoor Unit

ASKEL4H4R18 ASKCI4H4R18




1 Safety Precautions .......................................................................................... 1

2 Outline of the Unit and Main Parts................................................................... 2

3 Preparative for Installation ............................................................................... 3

3.1 Standard Accessory Parts .......................................................................... 3

3.2 Selection of the Installation Location .......................................................... 4

3.3 Connection Pipe Requirement ................................................................... 6

3.4 Electrical Requirement ............................................................................... 6

4 Installation of the Unit ...................................................................................... 8

4.1 Installation of the Indoor Unit ...................................................................... 8

4.2 Installation of the Outdoor Unit ................................................................. 10

4.3 Installation of the Connection Pipe ........................................................... 12

4.4 Vacuum and Gas Leakage Inspection ...................................................... 15

4.5 Installation of the Drain Pipe .................................................................... 17

4.6 Electrical Wiring ........................................................................................ 19

5 Installation of Controllers ............................................................................... 23

6 Test Running .................................................................................................. 23

6.1 Trial Operation and Testing ....................................................................... 23

6.2 Working Temperature Range .................................................................... 25

7. Troubleshooting and Maintenance ............................................................... 25

7.1 Troubleshooting ........................................................................................ 25

7.2 Routine Maintenance ............................................................................... 26

Contents


1

1 Safety Precautions

WARNING!This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.

CAUTION!This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property.

WARNING!

(1). For operating the air conditioner pleasantly, install it as outlined in this installation manual.

(2). Connect the indoor unit and outdoor unit with the room air conditioner piping and cord available from our standard parts. This installation manual describes the correct connections using the installation set available from our standard parts.

(3). Installation work must be performed in accordance with national wiring standards by authorized personnel only.

(4). If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a flame, it produces toxic gas.

(5). Do not power on until all installation work is complete.

(6). During installation, make sure that the refrigerant pipe is attached firmly before you run the compressor.

Do not operate the compressor under the condition of refrigerant piping not attached properly with 2-way or 3-way valve open.

This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury.

(7). During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping.

Do not remove the connection pipe while the compressor is in operation with 2-way or 3-way valve open.

This may cause abnormal pressure in the refrigerant cycle that leads to breakage and even injury.

(8). When installing and relocating the air conditioner, do not mix gases other than the specified refrigerant (R410A) to enter the refrigerant cycle.

If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally high value and cause breakage, injury, etc.

(9). This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

(10). Children should be supervised to ensure that they do not play with the appliance.

(11). If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.


2

2 Outline of the Unit and Main Parts

Indoor

Outdoor

1. Guide louver

2. Air filter

3. Wired controller

4. Wireless Controller

5. Binding tape

6. Drain Pipe

7. Gas Pipe

8. Lipuid Pipe

9. Big Handle

10. Front Board

3 4

5

679 810

1 2

Air inlet

Air outlet

Fig.2.1

Notes:

① .The connection pipe and duct for this unit should be prepared by the user.

② .This unit is standard equipped with the rectangular duct.


3

3 Preparative for Installation

3.1 Standard Accessory PartsThe standard accessory parts listed below are furnished and should be used as required.

Table 3.1

Indoor Unit Accessories

No. Name Appearance Q'ty Usage

1 Nut with Washer 8To fix the hook on the cabinet

of the unit.

2Wireless

Controller+Battery 1+2 To control the indoor unit

3 Insulation 1 To insulate the gas pipe

4 Insulation 1 To insulate the liquid pipe

5 Installation Paperboard 2 To insulate the drain pipe

6 Fastener 4 To fasten the sponge

7 Nut 1 To connect gas pipe

8 Nut 1 To connect liquid pipe

Table 3.2

Outdoor Unit Accessories

No. Name Appearance Q'ty Usage

1 Drain Plug 3 To plug the unused drain hole.

2 Drainage Connecter or 1To connect with the hard PVC

drain pipe


4

3.2 Selection of the Installation Location

WARNING!

The unit must be installed where strong enough to withstand the weight of the unit and fixed securely, otherwise the unit would topple or fall off.

CAUTION!

① .Do not install where there is a danger of combustible gas leakage.

② .Do not install the unit near heat source, steam, or flammable gas.

③ .Children under 10 years old must be supervised not to operate the unit.

Decide the installation location with the customer as follows:

3.2.1 Indoor Unit

(1). Install the unit at a place where is strong enough to withstand the weight of the unit.

(2). The air inlet and outlet of the unit should never be clogged so that the airflow can reach every corner of the room.

(3). Leave service space around the unit as required in Fig.3.1.

◆ Floor type

Unit: mm

>600

>1000

>300

>600

>15

00

◆ Ceiling type

Unit: mm

>300>600>600

>1500

>20

0>

2300

Fig. 3.1

(4). Install the unit where the drain pipe can be easily installed.

(5). The space from the unit to the ceiling should be kept as much as possible so as for more

convenient service.


5

3.2.2 Outdoor Unit

WARNING!

① .Install the unit where it will not be tilted by more than 5°.

② . During installation, if the outdoor unit has to be exposed to strong wind, it must be fixed securely.

If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install a blind that does not interfere with the air flow.)

(1). Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain

as much as possible.

(2). Install the outdoor unit where it is convenient to connect with the indoor unit.

(3). Install the outdoor unit where the condensate water can be drained out freely during

heating operation.

(4). Do not place animals and plants in the path of the warm air.

(5). Take the air conditioner weight into account and select a place where noise and vibration

are small.

(6). Install the outdoor unit where is capable of withstanding the weight of the unit and

generates as less noise and vibration as possible.

(7). Provide the space shown in Fig.3.2, so that the air flow is not blocked. Also for efficient operation, leave three of four directions of peripheral constructions open.

Units: mm

＞50

0

＞500 ＞500 ＞500

＞20

00

＞2000

＞10

00

Fig.3.2


6

3.3 Connection Pipe Requirement

CAUTION!

The maximum length of the connection pipe is listed in the table below. Do not place the units between which the distance exceeds the maximum length of the connection pipe.

Table 3.3

Size of Fitting Pipe(Inch)

Max.Pipe

Length(m)

Max. Height Difference between

Indoor Unit and Outdoor Unit (m)

Drainage pipe(Outer

Diameter × wall thickness) (mm)Liquid Gas

1/4 1/2 20 15 φ17×1.75

3/8 5/8 30 15 φ17×1.75

3/8 5/8 30 15 φ17×1.75

3/8 5/8 50 30 φ17×1.75

(1). The connecting pipe should be thermally insulated properly.

(2). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the

pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating

effect performs.

(3). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the

pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating

effect performs.

3.4 Electrical RequirementElectric Wire Size and Fuse Capacity.

Table 3.4

Indoor UnitsPower Supply Fuse Capacity Breaker Capacity Min. Power Supply Cord

V/Ph/Hz A A mm2

18K~48K 220-240V~ 60Hz 5 6 1.0

Table 3.5

ModelPowerSupply

Capability of AirSwitch(A)

Minimum Sectional Area of Power

Cable and Earth line (mm2)

ASKCI4H4R18

220-240V~ 60Hz

16 1.5

ASKCI4H4R24 20 2.5

ASKCI4H4R36 25 2.5

ASKCI4H4R48 40 6.0

Notes:

① .The fuse is located on the main board.

② .Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units

(Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is

Item

Model






7

accessible.

③ .The specifications of the breaker and power cable listed in the table above are determined based on the maximum power (maximum amps) of the unit.

④ .The specifications of the power cable listed in the table above are applied to the conduit-

guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and

a PVC cable jacket) used at 40°С and resistible to 90°С(see IEC 60364-5-52). If the working condition changes, they should be modified according to the related national standard.

⑤ .The specifications of the breaker listed in the table above are applied to the breaker with

the working temperature at 40°С. If the working condition changes, they should be modified according to the related national standard.

⑥ .Take 2 pieces of power cord of 0.75mm2 as the communication lines between indoor and

outdoor unit, with their longest lengths of 50m. Please select the appropriate line length as per

the actual installation conditions. The communication lines can not be twisted together. For

the unit (≤30K), it’s recommended to use 8m long communication line. ⑦ .Take 2 pieces of power cord of 0.75mm2 as the communication lines between the wired

controller and the indoor unit, with their longest lengths of 30m. Please select the appropriate

line length as per the actual installation conditions. The communication lines can not be twisted

together. It’s recommended to use 8m long communication line.

⑧ .The wire size of the communication line should be no less than 0.75mm2. It’s recommended to

take 0.75mm2 power cords as the communication line.


8

4 Installation of the Unit

4.1 Installation of the Indoor Unit

4.1.1 Indoor unit dimension

WARNING !

① .Install the indoor unit in a location which can withstand a load of at least five times the weight of the main unit and which will not amplify sound or vibration.

② .If the installation location is not strong enough, the indoor unit may fall and cause injuries.

③ .If the job is done with the panel frame only, there is a risk that the unit will come loose. Please

take care.

Fig.4.1

Table 4.1

Model A B C D H

ASKEL4H4R181220 225 1158 280 700

ASKEL4H4R24

ASKEL4H4R36 1420 245 1354 280 700

ASKEL4H4R48 1700 245 1634 280 700

4.1.2 Preparation for Installing the Indoor Unit

(1). Open the air inlet grille and the screw cover, and remove the screws.

(2). Release the claws in the 3 places indicated.

(3). Release the center hook and remove the front panel.

(4). Release the claws in the 2 or 3 places indicated and remove the electric component cover.


9

4.1.3 Indoor Unit Installation

(1). Determine the location of the hanger through the paper template, and then remove the

paper template.

Paper template

Anchor bolt

Fig.4.2

(2). Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor

bolts with a hammer.

(3). Remove the right and left side panels.

(4). Put the hanger bolt into the clasp of the indoor unit and tighten screws on the hanger to

prevent the indoor unit from moving.

(5). Reinstall and tighten the right and left side panels.

◆ Floor type

Wall

Left side panel

Right side panel

Paper template

Fig.4.3


10

◆ Ceiling type

40

Ceiling

Suspensionbolt

Springwasher

Nut

Nut

Hanger

Right side panel

Left side panel

Fig.4.4

(6). Adjust the height of the unit to make the drain pipe slant slightly downward so that the

drainage will become much smoother.

4.1.4 Leveling

The water level test must be done after installing the indoor unit to make the unit is horizontal,

as shown below.

Horizontal tester

Fig.4.5

4.2 Installation of the Outdoor Unit

WARNING

① .Install the unit where it will not be tilted by more than 5°.

② .During installation, if the outdoor unit has to be exposed to strong wind, it must be fixed securely.


11

4.2.1 Outdoor unit dimension

D

A

B

C

E

Fig.4.6

Table 4.2 Unit: mm

Item Model

A B C D E

ASKCI4H4R18 955 396 700 560 360

ASKCI4H4R24 980 427 790 610 395

ASKCI4H4R36 1107 440 1100 631 400

ASKCI4H4R48 958 412 1349 572 376

4.2.2 Condensate Drainage of the Outdoor Unit(Only for the heat pump unit) (Fig.10)

(1). It is required to install a drain pipe for the outdoor unit to drain out the condensate water

during heating operation. (only for the heat pump unit)

(2). When installing the drain pipe, apart from the drain pipe mounting hole, all other holes

should be plugged so as to avoid water leakage.(only for the heat pump unit)

(3). Installation Method: Insert the pipe joint into the hole φ25 located at the base plate of the unit and then connect the drain pipe to the pipe joint.

Bottom Drain cap

Drain pipe mounting hole

Fig.4.7


12

4.3 Installation of the Connection Pipe

4.3.1 Flare Processing

(1). Cut the connection pipe with the pipe cutter and remove the burrs.

(2). Hold the pipe downward to prevent cuttings from entering the pipe.

(3). Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the indoor unit, then insert them to the connection pipe, after that, flare the connection pipe with a flaring tool.

(4). Check if the flare part is spread evenly and there are no cracks (see Fig.11).

Fig.4.8

4.3.2 Bending Pipes

(1). The pipes are shaped by your hands. Be careful not to collapse them.

Fig.4.9

(2). Do not bend the pipes in an angle more than 90°.

(3). When pipes are repeatedly bent or stretched, the material

will harden, making it difficult to bend or stretch them any more. Do not bend or stretch the pipes more than three

times.

(4). When bending the pipe, do not bend it as is. The pipe

will be collapsed. In this case, cut the heat insulating pipe with a sharp cutter as shown in

Fig.4.10, and bend it after exposing the pipe. After bending the pipe as you want, be sure to put the heat insulating pipe back on the pipe, and secure it with tape.

Fig.4.10

Pipe

Cutter

Cutt line

Heat insulating pipe

CAUTION!

① .To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150

mm or over.

② .If the pipe is bent repeatedly at the same place, it will break.


13

4.3.3 Connecting the Pipe at the Indoor Unit Side

Detach the caps and plugs from the pipes.

CAUTION!

① .Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper,

the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be

damaged.

② .Do not remove the flare nut until the connection pipe is to be connected so as to prevent dust and impurities from coming into the pipe system.

When connecting the pipe to the unit or removing it from the unit, please do use both the

spanner and the torque wrench.(Fig.4.11)

When connecting, smear both inside and outside of the flare nut with refrigeration oil, screw it hand tight and then tighten it with the spanner.

Refer to Table 4.3 to check if the wrench has been tightened properly (too tight would mangle

the nut and lead to leakage).

Examine the connection pipe to see if it leaks, then take the treatment of heat insulation, as shown in the Fig.4.12.

Use the medium-sized sponge to insulate the coupler of the gas pipe.

Fig.4.11

Fig.4.12


14

Table 4.3 Flare nut tightening torque

Pipe Diameter Tightening Torque1/4˝(Inch) 15-30 (N·m)3/8˝(Inch) 35-40 (N·m)5/8˝(Inch) 60-65 (N·m)1/2˝(Inch) 45-50 (N·m)3/4˝(Inch) 70-75 (N·m)7/8˝(Inch) 80-85 (N·m)

CAUTION!

Be sure to connect the gas pipe after connecting the liquid pipe completely.

Fig.4.13

4.3.4 Connecting the Pipe at the Outdoor Side Unit

Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method is the same as that as at the indoor

side.

4.3.5 Checking the Pipe Connections for Gas Leaking

For both indoor and outdoor unit side, check the joints for gas

leaking by the use of a gas leakage detector without fail when the pipes

are connected.

4.3.6 Heat Insulation on the Pipe Joints (Indoor Side Only)

Stick coupler heat insulation (large and small) to the place where connecting pipes.

Fig.4.14


15

4.3.7Liquid Pipe and Drain Pipe

Sealed

Drainpipe

Saddle

Fig.4.15

Fig.4.16

Trap

If the outdoor unit is installed lower than

the indoor unit (See Fig.4.15)

(1). A drain pipe should be above ground

and the end of the pipe does not

dip into water. All pipes must be

restrained to the wall by saddles.

(2). Taping pipes must be done from

bottom to top.

(3). All pipes are bound together by tape

and restrained to wall by saddles.

If the outdoor unit is installed higher than

the indoor unit

(1). Taping should be done from lower to

the upper part.

(2). A l l p ipes are bound and taped

together and also should be trapped

to prevent water from returning to the

room (See Fig.4.16)

(3). Restraint all pipes to the wall with

saddles.

4.4 Vacuum and Gas Leakage Inspection

CAUTION!

Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging!

4.4.1 Vacuum(1). Remove the caps of the liquid valve, gas valve and also the service port.

(2). Connect the hose at the low pressure side of the manifold valve assembly to the service

port of the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed

in case of refrigerant leak.

(3). Connect the hose used for evacuation to the vacuum pump.

(4). Open the switch at the lower pressure side of the manifold valve assembly and start the

vacuum pump. Meanwhile, the switch at the high pressure side of the manifold valve


16

assembly should be kept closed, otherwise evacuation would fail.

(5). The evacuation duration depends on the unit’s capacity, generally, 20 minutes for the

18K units, 30 minutes for the 24/36K units, 45 minutes for the 48K units, And verify if the

pressure gauge at the low pressure side of the manifold valve assembly reads -1.0Mp

(-75cmHg), if not, it indicates there is leak somewhere. Then, close the switch fully and

then stop the vacuum pump.

(6). Wait for some time to see if the system pressure can remain unchanged, 5 minutes for the

18/24K units, 10 minutes for the 36/48K units. During this time, the reading of the pressure

gauge at the low pressure side can not be larger than 0.005Mp (0.38cmHg).

(7). Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance

the pressure inside and outside of the connection pipe, so that air will not come into the

connection pipe when removing the hose. Note that the gas and liquid valve can be opened

fully only after the manifold valve assembly is removed.

(8). Place back the caps of the liquid valve, gas valve and also the service port.

Hose with the valve pin

gauge manifold

pipe

pipe

VAC valve

Vacuum pumpService port

Low pressure gaugeHigh pressure gauge

Gauge manifold kit

Fig.20

Note: For the large-sized unit, it has the service port for both the gas valve and the liquid valve.

During evacuation, it is available to connect two hoses of the manifold valve assembly to two

service ports to quicken the evacuating speed.

4.4.2 Additional Charge

18K~36K: Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the

factory. When the piping is longer than 7m, additional charging is necessary.

48K: Refrigerant suitable for a piping length of 7.5m is charged in the outdoor unit at the factory.

When the piping is longer than 10 m, additional charging is necessary.

For the additional amount, see Table 4.4.

Table 4.4

Model Item

Additional Refrigerant Amount for Extra Pipe

18K 30 g/m

24~48K 60 g/m

When the height difference between the indoor unit and outdoor unit is larger than 10 meters,


17

an oil bend should be employed for every 6 meters.

Oil bend

Oil bend

Indoor

Outdoor

6m

Fig.4.18

4.5 Installation of the Drain Pipe

4.5.1 Precautions When Doing the Piping Work

(1). Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so

that air may not remain trapped inside the pipe.

(2). Keep pipe size equal to or greater than that of the connecting pipe.

(3). Install the drain piping as shown and take measures against condensation. Improperly

rigged piping could lead to leaks and eventually wet furniture and belongings.

Extension drain piping(commercially available)

Insulating tube(commercially available)

Indoor unitdrain hose

Insulating tape (accessory)

Fig.4.19

(4) Connect the drain hose.(Fig.4.20)

Drain hose mustslope downward.

Allow no trap toform in the piping

Do not allow endof hose to touchwater

Fig.4.20


18

4.5.2 Installing the Drain Pipes

(1). For determining the position of the drain hose, perform the following procedures.

(2). Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with

tape. (Fig.4.21)

(3). Connect the extension drain pipe to the drain pipe and then tighten the clamp with tape.

1 2

3

1

2Drain panSeal

Drain hose≤ 4mm

Fig.4.21 Fig.4.22 Fig.4.23

Tighten the clamp until the screw head is less than 4 mm from the hose.(Fig.4.22)

① -Metal clamp ② -Drain hose ③ -Grey tape

Insulate the pipe clamp and the drain hose using heat insulation sponge.(Fig.4.23)

① -Metal clamp ② -Insulation sponge

(4). When drain hose requires extension, obtain an extension hose commercially available.(5). After connecting the local drain hose, tape the slits of the heat insulation tube.

(6). Connect the drain hose to the local drain pipe. Position the inter connecting wire in the

same direction as the piping.

4.5.3 Connecting the Drain Hose

(1). Connect the extension auxiliary pipe to the local piping.(2). Prepare the local piping at the connection point for the drain pipe, as shown in the

installation drawings.

Note: Be sure to place the drain hose as shown in the diagram below, in a downward sloping

direction.

Drain pan

Drain hose

① Right side piping② Bottom-right piping

Fig.4.24

4.5.4 Testing of Drain Piping

(1) After piping work is finished, check if drainage flows smoothly.(2) As shown in the figure, pour water into the drain pan from the right side to check that water

flows smoothly from the drain hose.


19

Ceiling type Floor type

Fig.4.25

4.6 Electrical Wiring

4.6.1 Wiring Precautions

WARNING !

① .Before obtaining access to terminals, all supply circuits must be disconnected.

② .The rated voltage of the unit is as shown as Table 3.4 and Table 3.5.

③ .Before turning on, verify that the voltage is within the 198~264V range(for single phrase unit).

④ .Always use a special branch circuit and install a special receptacle to supply power to the air

conditioner.

⑤ .Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner.

⑥ .The special branch circuit breaker is installed in the permanent wiring. Always use a circuit that can

trip all the poles of the wiring and has an isolation distance of at least 3mm between the contacts of

each pole.

⑦ .Perform wiring work in accordance with standards so that the air conditioner can be operated safely

and positively.

⑧ .Install a leakage special branch circuit breaker in accordance with the related laws and regulations

and electric company standards.

CAUTION !

① .The power source capacity must be the sum of the air conditioner current and the current of other

electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity.

② .When the voltage is low and the air conditioner is difficult to start, contact the power company to raise the voltage.

4.6.2 Electrical Wiring

(1). For solid core wiring (Fig.4.26)

1). Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 25

mm (15/16") .

2). Using a screwdriver, remove the terminal screw(s) on the terminal board.

3). Using pliers, bend the solid wire to form a loop suitable for the terminal screw.


20

4). Shape the loop wire properly, place it on the terminal board and tighten securely with the

terminal screw using a screwdriver.

(2). For strand wiring (Fig.4.26)

1). Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 25

mm (15/16") .

2). Using a screwdriver, remove the terminal screw (s) on the terminal board.

3). Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped

wire end.

4). Position the round terminal wire, and replace and tighten the terminal screw with a

screwdriver.(Fig.4.27)

Fig.4.26

Fig.4.27 Fig.4.28

(3). How to fix connection cord and power cord by cord clampAfter passing the connection cord and power cord through the insulation tube, fasten it with the

cord clamp.(Fig.4.28)

WARNING!

① .Before starting work, check that power is not being supplied to the indoor unit and outdoor unit.

② .Match the terminal block numbers and connection cord colors with those of the indoor unit side.

③ .Erroneous wiring may cause burning of the electric parts.

④ .Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire.

⑤ .Always fasten the outside covering of the connection cord with cord clamps. (If the insulator is not

clamped, electric leakage may occur.)

⑥ .Always connect the ground wire.


21

(4). Electric wiring between the indoor and outdoor units

Single-phase units(18/24/36/48K)

ASKCI4H4R18 + ASKEL4H4R18① .Power cord 3×1.5mm2(H07RN-F)

② .Power cord 3×1.0mm2(H05RN-F)

③ .Communication Cords 2×0.75mm2(H05RN-F)

ASKCI4H4R24 + ASKEL4H4R24ASKCI4H4R36 + ASKEL4H4R36① .Power cord 3×2.5mm2(H07RN-F)



ASKCI4H4R48 + ASKEL4H4R48① .Power cord 3×6.0mm2(H07RN-F)



Fig.4.29

(5). Electric wiring of indoor unit side

Remove the left cover plate and the electric box cover then insert the end of the communication cord and the power cable into the terminal board.

Fig.4.30


22

CAUTION!

① .The power cord and the wire of the fresh air valve are high-voltage, while the communication cord

and connection wire of the wired controller are low-voltage. They should run separately against

electromagnetic interference.

② .The high-voltage and low-voltage lines should pass through the rubber rings at different electric box covers.

③ .Do not bundle the connection wire of the wired controller and the communication cord together, or

arrange them in parallel, otherwise improper operation would occur.

④ .The high-voltage and low-voltage lines should be fixed separately and securely, with internal big clamps for the former and small clamps for the latter.

⑤ .Tighten the indoor/outdoor connection cord and power cord respectively on the terminal boards with

screws. Faulty connection may cause a fire.

⑥ .If the indoor unit connection cord (to the outdoor unit) and power supply are wired incorrectly, the air

conditioner may be damaged.

⑦ .Connect the indoor unit connection cord properly based on the corresponding marks as shown in

Fig. 4.29.

⑧ .Ground both the indoor and outdoor units by attaching a ground wire.

⑨ .Unit shall be grounded in compliance with the applicable local and national codes.

(6). Electric wiring of outdoor unit side

Note: When connecting the power supply cord, make sure that the phase of the power supply

matches with the exact terminal board. If not, the compressor will rotate reversely and run improperly.

Remove the big handle(18/24/36K) /front board(48K) of the outdoor unit and insert the end of

the communication cord and the power cable into the terminal board.

Single phase:

Fig.4.31


23

Power lines should go along the right side plate and

be fixed to the fixation hook with binding wires to keep no contact with pipelines. Communication lines between

indoor and outdoor units also should go along the right side

plate and keep away from power lines.

Routing of

External Power Lines

Fig.4.32

5 Installation of ControllersRefer to the Installation Manual of the controller for more details.

6 Test Running

6.1 Trial Operation and Testing(1). The meaning of error codes as shown below:

Table 6.1

Number Error code Error Remarks

1 E1 Compressor high pressure protection

2 E2 Indoor anti-freeze protection

3 E3 Compressor low pressure protection, refrigerant lack

protection and refrigerant colleting mode

4 E4 Compressor high discharge temperature protection

5 E6 Communication error

6 E8 Indoor fan motor error

7 E9 Full water protection

8 F0 Indoor ambient temperature sensor error

9 F1 Evaporator temperature sensor error

10 F2 Condenser temperature sensor error

11 F3 Outdoor ambient temperature sensor error

12 F4 Discharge temperature sensor error

13 F5 Temperature sensor error of wired controller

15 C5 Capacity code error

16 EE Outdoor memory chip error

17 PF Electric box sensor error18 H3 Compressor overload protection

19 H4 Overloading


24

20 H5 IPM protection

21 H6 DC fan motor error

22 H7 Drive desynchronizing protection

23 Hc Pfc protection

25 Lc Activation failure

26 Ld Compressor phase sequence protection

27 LE Compressor stalling protection

28 LF Power protection

29 Lp Indoor and outdoor mismatch

30 U7 4-way valve direction changing protection

31 P0 Drive reset protection

32 P5 Over-current protection

33 P6 Communication error between main control and drive

34 P7 Drive module sensor error

35 P8 Drive module over temperature protection

36 P9 Zero passage protection

37 PA AC current protection

38 Pc Drive current error

39 Pd Sensor connecting protection

40 PE Temperature drift protection

41 PL Bus low voltage protection

42 PH Bus high voltage protection

43 PU Charge loop error

44 PP Input voltage abnormality

45 ee Drive memory chip error

Note: When the unit is connected with the wired controller, the error code will be simultaneously

shown on it.

(2). Instructions to the Error Indicating Lamps on the Panel of the Floor Ceiling Type Unit.

States of the Indicating Lamps:

① .Indicating Lamp of “POWER”: The indicating lamp will

shine when power on, while it will go out when power off.

② .Indicating Lamp of “COOL” :

The indicating lamp will shine when “COOL” is activated,

while it will go out when “COOL” is deactivated.

③ .Indicating Lamp of “HEAT”:

The indicating lamp will shine when “HEAT” is activated,

while it will go out when “HEAT” is deactivated.

④ .Indicating Lamp of “TIMER”:

The indicating lamp will shine when “TIMER” is activated,

while it will go out when “TIMER” is deactivated or the set.

①

②

④

③

Fig.6.1


25

6.2 Working Temperature RangeTable 6.2

Test ConditionIndoor Side Outdoor Side

DB(°C) WB(°C) DB(°C) WB(°C)

Nominal Cooling 27 19 35 24

Nominal Heating 20 − 7 6

Rated Cooling 32 23 48 −

Low Temp. Cooling 21 15 -15 −

Rated Heating 27 − 24 18

Low Temp. Heating 20 − -10 -11

Note:

① .The design of this unit conforms to the requirements of EN14511 standard.

② .The air volume is measured at the relevant standard external static pressure.

③ .Cooling (heating) capacity stated above is measured under nominal working conditions

corresponding to standard external static pressure. The parameters are subject to change with

the improvement of products, in which case the values on nameplate shall prevail.

7. Troubleshooting and Maintenance

7.1 TroubleshootingIf your air-conditioning unit suffers from abnormal operation or failure, please first check the

following points before repair:

Table 7.1

Failure Possible Reasons

The unit cannot be started.

① .The power supply is not connected.

② .Electrical leakage of air-conditioning unit causes tripping of the leakage

switch.

③ .The operating keys are locked.

④ . The control loop has failure.

The unit operates for a whileand then stops.

① .There is obstacle in front of the condenser.

② .The control loop is abnormal.

③ .Cooling operation is selected when the outdoor ambient temperature is

above 48°C.

Poor cooling effect.

① .The air filter is dirty or blocked.② .There is heat source or too many people inside the room.

③ .The door or window is open.

④ .There is obstacle at the air intake or outlet.

⑤ .The set temperature is too high.

⑥ .There is refrigerant leakage.

⑦ .The performance of room temperature sensor becomes worse


26

Poor heating effect

① .The air filter is dirty or blocked.② .The door or window is not firmly closed.③ .The set room temperature is too low.

④ .There is refrigerant leakage.

⑤ .The outdoor ambient temperature is lower than -5°C.

⑥ .Control loop is abnormal.

Note: After carrying out the check of the above items and taking relevant measures to solve the

problems found but the air-conditioning unit still does not function well, please stop the operation

of the unit immediately and contact the local service agency designated by AIR-CON.

Only ask professional serviceman to check and repair the unit.

7.2 Routine Maintenance

WARNING !

① .Do turn off the unit and cut off the main power supply when cleaning the air conditioner, otherwise

electric shock may happen.

② .Do not make the air conditioner wet or electric shock may be lead; Ensure that the air conditioner

will not be cleaned by water rinsing under any circumstance.

③ .Volatile liquid like thinner or gasoline would damage the appearance of air conditioner. (So, only soft

dry cloth and wet cloth moistened by neutral cleaning fluid could be used to clean the surface panel of air conditioner.)

(1). Disassembly method of filter screen and electric box cover

1. Open the air inlet grille① .Firstly unfix two buckles on the grille as shown

on the picture.

② .Remove the screws under the buckles by a

screwdriver and then open the inlet grille.

Remove the screw


27

2. Clean the filer screenClean the filer screen by a vacuum cleaner or

wash it by flashing water. If the oil stain on the filter can not be removed or cleaned up, wash it by warm water meld with the detergent. Dry the filer in the shadow.

Note:① .Never use hot water over 45°C in case of color

fading or turning yellow.

② .Never dry it by fire so as to prevent the filter

caught fire or deformation.

3. Disassemble the left and right side board① .After the grille is removed, use a screwdriver to

remove the screws shown on the picture.

② .Push the side plate as per the arrowed direction

and take it down.

Remove the screw

4. Disassemble the right side board Disassembly method of right side board Step 3

5. Disassemble the electric box coverAfter the right side board is removed, the electric box cover will be shown up and disassemble the fixed screws on it.

(2). At the Start of the Seasonal Use

1) Check if there is blockage at the inlet or outlet vent of air conditioner.

2) Check if the earth wire has been attached reliably by the skilled serviceman.

3) Check if the exhausted batteries of the wireless controller have been replaced.4) Check if the air filter had been installed well by professional.Keep the power switch “On” 8 hours before the startup of the unit which has not been used

for a long period.

Note: all above should be operated by the skilled serviceman.

(3). At the End of the Seasonal Use

1) Cut off the power supply main switch

2) Clean the air filters and other parts by the skilled serviceman.3) Leave the fan running for 2-3 hours to dry the inside of the unit.

Note: all above should be operated by the skilled serviceman.

DC Inverter U-match Series Floor Ceiling Type Unit

Documents